<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Any JS</title>
</head>
<body>
    <script>
        let code = location.hash.substr(1);
        eval(unescape(code));
    </script>
</body>
</html>